body {
    background-color: #f3f5f7;
}

* {
    margin: 0;
    padding: 0;
}

li {
    list-style: none;
}

a {
    text-decoration: none;
}

input,
img {
    display: block;
    float: left;
}

header {
    width: 1200px;
    height: 42px;
    margin: 30px auto;
}

#logo,
#nav,
#search,
#face {
    float: left;
}

#logo img {
    width: 95px;
    height: 42px;
}

#nav {
    width: 411px;
    height: 42px;
    margin-left: 70px;
}

#nav ul li {

    height: 42px;
    line-height: 42px;
    text-align: center;
    display: block;
    float: left;
}

#nav ul li a {
    display: inline-block;
    color: #050505;
    font-size: 18px;
    padding: 0 20px;
}

#nav ul li a:hover {
    border-bottom: 2px solid #00a4ff;
    color: #00a4ff;
}

#search {
    width: 410px;
    height: 40px;
    box-sizing: border-box;
    background: chartreuse;
}

#search input {
    width: 360px;
    height: 40px;
    border: 1px solid #00a4ff;
    border-right: none;
    color: #bfbfbf;
    padding-left: 15px;
    font-size: 14px;
    background-color: #f3f5f7;
    box-sizing: border-box;
    outline: none;
}

#face {
    margin-left: 40px;
    width: 160px;
    height: 42px;
    line-height: 42px;
}

#face span a {
    display: inline-block;
    color: #666;
    margin-left: 10px;
}

#face img {
    padding-top: 6px;
}

/*banner*/
.banner {
    height: 420px;
    background-color: #1c036c;
}

.mainav {
    width: 1200px;
    height: 420px;
    margin: 0 auto;
    background: url("../img/banner2.png") no-repeat top center;

}
.mainav ul{
    width: 192px;
    height: 420px;
    background-color: rgba(0,0,0,.3);
    float: left;
}

.mainav ul{

}
.mainav ul li{
    float: left;
    height: 40px;
    line-height: 40px;
    width: 192px;
    padding-left: 20px;
    box-sizing: border-box;
    margin-top: 6px;
}

.mainav ul li a {
    color: #fff;
    font-size:14px;
    display: block;
    text-decoration: none;

}
.mainav ul li a span{
    float: right;
    padding-right: 23px;

}

.sidenav {
    width: 230px;
    height: 300px;
    background: #fff;
    margin-top: 30px;
    float: right;

}
.sidenav h4 {
    font-weight: 400;
    height: 30px;
    line-height: 30px;
    text-align: center;
    width:100% ;
    background-color: #9bceea;
    font-size: 18px;
    color: #fff;

}

.sidenav dl {
    margin: 15px 20px 0 20px;
    padding-bottom: 15px;
    border-bottom: 1px solid #eaeaea;

}

.sidenav dl dt{
    color: #4e4e4e;
    font-size: 16px;
    line-height: 20px;
}

.sidenav dl dd{
    display: block;
    color: #a5a5a5;
    font-size: 12px;
}

.btn {

    height: 40px;
    width: 200px;
    line-height: 40px;
    border: 1px solid #00a4ff;
    margin-left: 15px;
    text-align: center;

}

.btn a{
    display: block;
    color: #00a4ff;
    font-size: 16px;
}
/*------bottomnav--------*/
.bottomnav {
    height: 62px;
    width: 1200px;
    margin: 20px auto;
    padding: 21px 0;
    box-sizing: border-box;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);

}
.bottomnav  h5,.bottomnav span{
    color: #00a4ff;
    float: left;
    margin-left: 34px;
    font-size: 16px;

}

.bottomnav  li {
    float: left;
    padding-left: 36px;
    padding-right: 36px;
    border-right: 1px solid #bfbfbf;
    height: 16px;
    line-height: 16px;



}

.bottomnav  li a{
    color: #050505;
    display: block;
    font-size: 16px;
}

.bottomnav span {
    float: right;
    margin-left: 0;
    padding-right: 50px;
    font-weight: bold;
    cursor:pointer;

}